Nick P. wrote:
>
> Hi,
>
> I have a question.
>
> Did anyone ever etch stainless steele? I know Ferric Chloride is supposed
> to work but at what concentration (i.e. FeCl3:H2O = ?) Do we need to add
> anything else (i.e. HCl)?
>
> And where can I buy Ferric Cholride from? Thanks.
>
> Nick
>
Nick,

Etching stainless steel (foil form) with Ferric Chloride is quite easy.
Solution with 20 -30 % FeCl3 at room temperature have to be sprayed
(not immersed  with) on the sample.
As a mask for a larger holes ( 0.1 - 1 mm) you can use photosensitive
foil for a printed board (3M)

Good luck
Jovan

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